/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/MetasoundFrontendController.h
Returns an input's default literal if set, null if not.
const [FMetasoundFrontendLiteral](API\Plugins\MetasoundFrontend\FMetasoundFrontendLiteral) * GetInputLiteral ( const [FGuid](API\Runtime\Core\Misc\FGuid) & InVertexID ) const